Wika Alexander Wiegand SE & Co. KG

A power supply for crane systems is provided. In order to transmit greater power at or before a rope length transmitter, the voltage is transformed up in a first converter and transformed back again in a second converter at the end of a cable, at or near a tip of the crane, for the consumers.

A protective tube for sealed introduction into a process vessel at a process vessel port, the protective tube comprising a sealing base element which is connected onto the process vessel port and an elongate body with a bore. The elongate body comprises a closed distal end and an open proximal end, which is sealingly connected onto the sealing base element. The protective tube also comprises a receiving part, which is connected or attached onto the elongate body inside the process vessel so as to receive and hold a secondary temperature sensor from inside the process vessel. In addition, a reference temperature sensor is insertable into the bore from outside the process vessel. Also provided is a temperature measurement arrangement and a method for a temperature measurement in a process vessel.

A membrane device/membrane having a flexible membrane section. A first side of the membrane section is exposed to a process medium and a second side has a layer structure, which includes at least a first layer and a second layer. The first layer has a coefficient of thermal expansion, the value of which lies between the values of the coefficients of thermal expansion of the membrane section and the second layer. The second layer, with respect to the process medium or a component of the process medium has a permeability that is lower than the corresponding permeability of the membrane section. A pressure transmitter and a pressure sensor comprising such a membrane device is provided, as well as a use for a membrane device.

The invention relates to a level measuring device in which a plurality of capacitive sections can be connected to a reference capacitor, whereby a leveling voltage level can be evaluated and output as a level.

A thermocouple assembly for surface temperature measurement, comprising a sheathed thermocouple sensor cable, a positioning pad, receiving and/or securing a thermocouple sensor end at a desired measuring point, an insulation body, and a shielding, wherein the positioning pad is mechanically connected to the shielding. Additionally methods for the installation of a thermocouple assembly are also provided.

A level sensor includes a housing and at least one sensor that is designed to measure a pressure of a medium and that is electrically connected to evaluation electronics. The level sensor also includes a connection cable that is guided through the housing in a sealing section. At least one crimp sleeve is pressed around the connection cable in the sealing section inside the housing. A pressing element is fastened in the sealing section of the housing in such a way that the crimp sleeve is pressed against a sealing surface of the sealing section. The housing or at least the sealing section of the housing is at least partially filled with a first casting, and the casting encloses the connection cable, at least in sections.

A temperature sensor, having a first conductor made of a first material comprising an end section, a second conductor made of a second material, which differs from the first material, comprising an end section, and a casing for receiving the end sections of the two conductors and for positioning in a process atmosphere or in a process fluid and/or on a surface of a process structure. According to the invention, a measuring point body structure is provided, which is arranged within the casing or on the casing, wherein the first conductor and the second conductor directly or indirectly form a thermocouple in or on the measuring point body structure and the measuring point body structure comprises a barrier material.

A thermocouple assembly for surface temperature measurement, comprising a sheathed thermocouple sensor cable, a positioning pad, receiving and/or securing a thermocouple sensor end at a desired measuring point, an insulation body, and a shielding, wherein the positioning pad is mechanically connected to the shielding. Additionally methods for the installation of a thermocouple assembly are also provided.

A pressure-actuated switch having a pressure port, a diaphragm, a range spring, an actuator plate, a differential plate, and an electrical switch. A certain pressure level moves the diaphragm against the range spring at the pressure port and thus deflects the actuator plate. The actuator plate is coupled to the electrical switch via a snap spring, wherein the electrical switch can be switched on or off via the deflection of the actuator plate and the snap spring. The differential plate controlled by a differential spring is connected to the actuator plate and supports the actuator plate in a first portion of movement, wherein the differential plate is decoupled from the actuator plate in a second portion of movement of the actuator plate.

A measuring system, for a physical variable, includes a housing, a measuring tube having at least one tubular deformation body having a cross-section which is deformed at least partially and which is configured to expand elastically under pressure, two feed sections attached to end sections of the deformation body, two sealing sections for sealingly coupling the measuring system to a process, and two molded support sections to carry the housing. A measuring sensor system measures values of at least one of a stretching or a widening at at least two points on a section of the deformation body. An evaluation unit evaluates measured values of the stretching and widening and outputs them as a measurement signal. The housing at least partially surrounds and stabilizes the measuring tube on an outside and is provided with a vacuum and/or a negative pressure compared to the outside atmosphere.